package com.wc.AlgoOJ_homework.AlgoOJ_BL2.A_求和;

/**
 * @Author congge
 * @Date 2024/4/1 18:45
 * @description
 */
public class Main {
    public static void main(String[] args) {
        int n = 20230408;
        long s = 0;
        for (int i = 1; i <= n; i++) s += i;
        System.out.println(s);
    }
}
